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POPCNT instruction required (prevents installation on very old CPUs without SSE4.2 or SSE4a)
September 20, 2022
Windows 11 represents a significant shift in Microsoft’s approach to personal computing, moving away from the "OS as a service" model of Windows 10 toward a more refined, aesthetically focused, and AI-integrated experience. Since its release in late 2021, the operating system has undergone several major transformations. This comprehensive history tracks the evolution of Windows 11 from its "Sun Valley" beginnings to the latest AI-driven innovations. The Initial Launch: Version 21H2 (The Sun Valley Era) windows 11 version history